Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754811AbbFLT4f (ORCPT ); Fri, 12 Jun 2015 15:56:35 -0400 Received: from mail-wi0-f175.google.com ([209.85.212.175]:37221 "EHLO mail-wi0-f175.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750861AbbFLTzX (ORCPT ); Fri, 12 Jun 2015 15:55:23 -0400 From: Pantelis Antoniou To: Rob Herring Cc: Grant Likely , Matt Porter , Koen Kooi , Guenter Roeck , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Pantelis Antoniou , Pantelis Antoniou Subject: [PATCH 6/8] doc: dt: Document the target root overlay method Date: Fri, 12 Jun 2015 22:55:03 +0300 Message-Id: <1434138905-15886-7-git-send-email-pantelis.antoniou@konsulko.com> X-Mailer: git-send-email 1.7.12 In-Reply-To: <1434138905-15886-1-git-send-email-pantelis.antoniou@konsulko.com> References: <1434138905-15886-1-git-send-email-pantelis.antoniou@konsulko.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1671 Lines: 39 Add a description of the target root overlay method to the overlay documention file. Signed-off-by: Pantelis Antoniou --- Documentation/devicetree/overlay-notes.txt | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Documentation/devicetree/overlay-notes.txt b/Documentation/devicetree/overlay-notes.txt index dd595e6..00ede57 100644 --- a/Documentation/devicetree/overlay-notes.txt +++ b/Documentation/devicetree/overlay-notes.txt @@ -104,6 +104,10 @@ If your board has multiple slots/places where a single overlay can work and each slot is defined by a node, you can use the of_overlay_create_indirect() method to select the target. +For overlays on probeable busses, use the of_overlay_create_target_root() method +in which you supply a device node as a target root, and which all target +references in the overlay are performed relative to that node. + Overlay DTS Format ------------------ @@ -144,3 +148,7 @@ contains the information required to map from a phandle to a tree location. The indirect target requires the use of a selector target on the call to of_overlay_create_indirect(). I.e. passing the "foo" id will select the target in the foo node, "bar" in bar node, etc. + +Note that when using the target root create method all target references must +lie under the target root node. I.e. the overlay is not allowed to 'break' out +of the root. -- 1.7.12 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/